No, the Gyphon does not have an adjustable trigger
No. None of the kits will fit.
The threads are Tippmann Barrel Threads
I believe it is a5/x7 threaded.
Yes, the tippmann 98 and all of its variants use the same threaded barrels.
The 68 does not have a removable barrel.
Yes, the tippmann 98 and the tippmann custom are the same marker, therefore the threading of the barrel will be the same.
Yes! They have the same threads. but the tippmann 98 custom platinum is not as good as the original if i were u i would ge rid of the thing...its not that it is bad it just chops and is not built as good as the tippmann 98 custom.
yes it will fit because the treads are the same